Hinge clutch



April 26,1927.

G. WVZABEL HINGE CLUTCH Filed Oct 14, 1926 INVENTOR/ 4AP%ORNIEY Patented Apr. 26, 1927.

j more st GEORGE w. zA nL, or- SHERMAN, CALIFORNIA.

HINGE CLUTCH.

Application filed October 14, 1926. SerialNo. 141,506.

This invention relates to casement window hinges and more especially to a'clutch readily attachable to the hinge without removal of its usual pintle and without change in the structure of the leaves.

An object is to provide a very simple, inexpensive friction clutch which may be readily applied to the hinge by the mere removal of the usual bottom journal stub and by the insertion of a stud forming a part of the clutch.

Another object is to provide a clutch which may be applied to a variety of sizes and types of hinges.

A further object is to provide a clutch of very simple parts which can be produced and assembled at low cost, and yet which are strong and durable, and highly. effective, when installed, to hold the window sash at any angle on its pintles.

Additional objects, advantages and features of the invention will be made manifest in the following specification of an embdi-,

ment of the clutch; it being understood that modifications, variations and adaptations may be resorted to within the spirit. scope and principle of the invention as it is here claimed. g 1

Figure 1 is an elevation showing the clutch applied to an open hinge.

Figure 2 is a bottom plan of the hinge.

Figure 3 is a bottom plan of one leaf of the hinge.

Figure 4 is a side elevation of the detached clutch.

Figure 5 is a top end plan of the clutch stud. Figure 6 is an elevation of the stud.

Figure 7 is a bottom end plan thereof. Figure 8 is an axial section of the clutch clamp nut. v

Figure 9 is a plan of one of the fixed plates of the clutch.

Figure 10 is an edge view thereof. Figure 11 is a top plan of the lugged, turning plate of the clutch.

Figure 12 is an elevation of the face of the lug and edge of the plate.

Figure 13 is an elevation of the edge of the lug and of the plate.

The clutch comprises a central stud 2 of cylindrical form to be driven into the lower journal J of one leaf A of a hinge having a second leaf B whose journal J receives the usual pintle P from the upper journal J. The stud 2 is shorter than the journal J, which has in its pintle hole H a lateral recess R due to rolling of the metalto form the The stud 2 (Fig. 2) has a side fin or key 3 to be driven inalong the recess R, therefore keying the stud in place against rotation.

At the base of the stud 2 is a slight collar 4 to limit inward position of the stud, and

below the collar is a squared (or non-circular) body 5 below which is a threaded stem 6.

A blindnut 10 has. a kerf 11 and'is turn-- able on thestem 6 so as to clamp up a set of friction plates 12 and 13. The plates 12 have square'holes-l to match the body 5 and the plate 13 has a round hole 15 so as to turn, on the body, between the plates 12. Hence the plates'12 are stationary as to the stud and itshinge loaf A; The body 5 is of less length than the aggregate thickness of the plates 12 and 13 so that the nut can clamp the plates together against the collar 4.

The plate 13 has an upturned side lug 16 slotted at 17 to slip up on thebottom edge of the leaf B, Fig. 1. 1

With the parts assembled as a unit, the clutch is ready for. application by being driven into place on the bottom of the hinge journal; the lug 16 being arranged to hook onto the leaf B. Now by setting up the nut 10 the swinging hinge leaf can be held'frictionally at any point in its limit of swing,

' when on a window sash.

What is claimed is :v p

1. A friction clutch for a hinge, including ajournal key stud element having a screw stem, mutual clamp members one of which is turnable between others, and means for clamping the members together; the turnable member having means to interlock with one hinge leaf.

2. A friction clutch for holding hinge leaves adjusted and including a stud element having a key part to interlock in a journal of one hinge leaf, a screw stem, a nut mounted on the stem, spaced friction elements on the stud element, and a turnable friction member between the spaced elements; said nut being operative to set up the said elements.

a 3. A friction clutch for holding hinge leaves adjusted and including a stud element mounted on thestem, spaced. friction elements on the stud element, and a turnable 'friction member between the spaced elel non-circular body part on which the spaced elements are nonturnably mounted.

4. An attachment for a hinge, including a stud part having a key end to be driven into a hinge leaf journal and having a screw end and an intermediate non-circular body, a pair of friction Washers nonturnable on said 10 body and an intermediate turnable Washer having means to interlock on a hinge'leaf, and a nut on the screw end for pressing the Washers together.

GEORGE WV. ZABEL. 

